Control board



FIG. 1 is a perspective view of the control board;

FIG. 2 is a top view of the control board;

FIG. 3 is a bottom view of the control board;

FIG. 4 is a front view of the control board;

FIG. 5 is a back view of the control board;

FIG. 6 is a right side view of the control board; and,

FIG. 7 is a left side view of the control board. 

The ornamental design for the control board, as shown and described. 